John Brooks wrote:
Alodine has been used in the aircraft industry for ever. It's a dip or brush process, Henkel developed it just before WW2. It's not expensive but it can be hard to dispose of. Most civil airports will have a repair station or FBO that has a alodine tank and will do the process for you at a reasonable price, or maybe free if you tell them it's for a 356. Clean and prep your parts before you head for the airport, clean is an important part of the process. It comes in gold or clear. It's not hard to do, the dip is just a minute or two depending on the strength and age of the mixture. http://na.henkel-adhesives.com/product- ... 7999529985https://www.youtube.com/watch?v=6zWed-NISUY
John. Alodine is commonly used in the aircraft industry. It helps prevent corrosion. Don't want corrosion on any part of an airplane that is several thousands of feet in the air......especially if your in it!!!! The problem in this particular case (pun intended) is Alodine is not for MAGNESIUM on these blocks. Maybe you didn't see the first word in my subject topic line. I worked and retired from the aerospace industry and we used alodine to treat parts shipside when we "modified" them to fit.
Although I'm not a chemist and don't know what type of process or chemicals is used to get this finish on magnesium, I do know that it duplicates the original finish and also protects the magnesium against corrosion, provides a good base should the product be painted and allows the engine to "breathe" sorta speak. It does not seal its pores thus allows the magnesium to dissipate heat. I've even seen people trying to duplicate this finish with rattle can gold paint!?! Sheesh!
Not only does the engine run hotter when it's painted, when gasoline comes in contact with paint, it will lift and run and look terrible.
This process should not be done by any novice! This process should be left to the professionals with proper training in using/handling these caustic chemicals.